<p class=MsoNormal><font size=2 face=Verdana><span style='font-size:10.0pt;
font-family:Verdana'>Itís not possible for actors to Ďwatchí each other in this
system, correct?† For instance, if one actor holds a reference to another, it will
keep that old version of the actor alive, but it wonít see when the actor moves.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Verdana><span style='font-size:10.0pt;
font-family:Verdana'>This game doesnít seem to need actors that watch each
other, but itís very common in games.† Iíve been using IORefs for that purpose,
but I like how pure the Mario game is.† Is there a better way than IORefs?<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>Hi I haven't seen this posted any where so I'm sorry in
advance if this has been mentioned already but I came across this recent video
on youtube: http://uk.youtube.com/watch?v=gVLFGQGRsDw it's a mario clone
written in haskell with a link to source code repository
(http://svn.coderepos.org/share/lang/haskell/nario/). I thought that it maybe
useful to some people.<o:p></o:p></span></font></p>